21760400

素因数分解:

$2^4\times 5^2\times {\mathrm{54401}}^1$

素因数の和:54419

約数の個数: 30

約数和(自身を含む): 52280322

約数和(自身を除く): 30519922

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54401, 108802, 217604, 272005, 435208, 544010, 870416, 1088020, 1360025, 2176040, 2720050, 4352080, 5440100, 10880200, 21760400]

約数ペア:

[(1, 21760400), (2, 10880200), (4, 5440100), (5, 4352080), (8, 2720050), (10, 2176040), (16, 1360025), (20, 1088020), (25, 870416), (40, 544010), (50, 435208), (80, 272005), (100, 217604), (200, 108802), (400, 54401)]